메타버스와 구강보건학의 변화

조현재 ( Cho Hyun-jae ) 대한예방치과·구강보건학회 2021 大韓口腔保健學會誌 Vol.45 No.4

대학생의 외톨이성향이 진로미결정에 미치는 영향 : 진로결정자기효능감의 매개효과

조현재(Cho Hyun Jae) 학습자중심교과교육학회 2020 학습자중심교과교육연구 Vol.20 No.9

본 연구는 외톨이성향이 진로미결정에 어떤 영향을 미치는지 확인하고, 외톨이성향과 진로미결정의 관계에서 진로결정자기효능감이 매개효과를 가지는지를 살펴보고자하였다. 이를 위해 2019년 9월 5일부터 2019년 9월 13일까지 대구와 경북에 소재하는 4년제 대학교에 재학 중인 학생 368명의 자료를 활용하여 연구를 진행하였다. 본 연구의 결과는 다음과 같다. 첫째 외톨이성향과 진로미결정, 진로결정자기효능감 사이에는 유의미한 상관관계를 보였다. 둘째, 변인 간 관계를 분석해본 결과 외톨이성향은 진로미결정과 진로결정자기효능감에 유의미한 영향을 미치는 것으로 확인되었다. 그리고 진로결정자기효능감도 진로미결정에 유의미한 영향을 미쳤다. 셋째, 외톨이성향이 진로미결정에 영향을 주는 과정에서 진로결정자기효능감의 매개효과가 확인되었다. 이 결과는 진로미결정을 이해하는데 있어서 외톨이성향과 진로결정자기효능감에 대한 이해가 중요한 의미를 가진다는 것을 보여주는 것이며, 추후 진로미결정을 해결하는 과정에서 두 변인들을 반드시 고려해야한다는 것을 시사해준다. 이 연구에서 확인된 결과는 진로상담프로그램 개발과 수정에도 유용한 정보를 제공해 줄 것이다. The purpose of this study was to examine the structural relationship among reculsive tendency, career indecision, and career decision-making self-efficacy. we collected data from 368 students and analyzed with structural equation modeling. study finding are as follows. First, reculsive tendency, career indecision, and career decision-making self-efficacy were statistically significantly related to one another. Second, there were significant direct and indirect effects from reculsive tendency to career decision-making self-efficacy, career indecision. Third, the mediation roles of career decision-making self efficacy for reculsive tendency and career indecision were confirmed. Result demonstrated that the necessity for the understanding and application of reculsive tendency and career decision-making self efficacy on career indecision. The finding of this research can provide useful information for the career counseling programs.

접촉전압 저감을 위한 Mesh접지 최외곽 추가도체에 관한 연구

조현재(Hyun-Jae Cho),김래영(Rea-Young Kim) 한국조명·전기설비학회 2023 한국조명·전기설비학회 학술대회논문집 Vol.2023 No.5

베이킹소다 배합 세치제가 치은염 및 치아표면에 미치는 영향

조현재 ( Hyun Jae Cho ),백대일 ( Dai Il Paik ),한동헌 ( Dong Hun Han ) 대한예방치과·구강보건학회 2015 大韓口腔保健學會誌 Vol.39 No.2

Objectives: To evaluate the effectiveness of sodium bicarbonate dentifrices in reducing gingivitis and tooth abrasiveness and improving tooth gloss, as compared to a conventional fluoride/silica-containing dentifrice. Methods: In this double-blinded, randomized clinical study with a paralleled design, 73 healthy adult volunteers (age, 18-39 years), with more than 20 teeth were selected and randomly allocated to the following groups: a control group, a 35% baking soda group, and a 65% baking soda group. Professional plaque controls were provided to all subjects and the same control dentifrice was used for 14 days. At baseline, all subjects received an assigned dentifrice and were instructed to brush three times daily. The tooth gloss and gingival bleeding index were measured at baseline, 45, and 90 days. For measuring surface roughness, toothbrushes were replaced with electronic tooth-brushing machines, and the bovine specimen was brushed via 10,000 horizontal shuttle movements. The surface roughness was measured by a confocal laser scanning microscope (CLSM; Carl Zeiss, LSM-5 Pascal, Germany) Each variable was analyzed by the paired t-test, and change in each variable among groups was analyzed by analysis of variance (ANOVA). Reliability of the gloss was analyzed by an intra-class correlation coefficient. Results: Compared to the controls, the 65% sodium bicarbonate dentifrice group showed significant improvement with regard to the tooth gloss for 90 days as well as a significant inhibitory effect on gingivitis; the 35% sodium bicarbonate dentifrice group, however, showed no inhibitory effect on gingivitis. The relative roughness of the tooth surface in the dentifrices of both the sodium bicarbonate dentifrice groups was significantly low. Further, there was no significant difference with the distilled water group. Conclusions: The sodium bicarbonate dentifrice has an inhibitory effect on gingivitis. Further, this dentifrice showed low abrasiveness and a glossing effect on teeth.

중장년기 주요 구강건강 지표

조현재(Hyun-Jae Cho) 대한치과의사협회 2019 대한치과의사협회지 Vol.58 No.1

Although the Korea National Health and Nutrition Examination Survey (KNHANES) calculates oral health functional restriction rate and chewing discomfort rate every year, these two indicators are not all indicators of oral health. Therefore, indicators are needed to subdivide by age group and cover dental caries, periodontal disease, remaining teeth, and oral care use. The purpose of this study is to identify the key indicators of oral health in mature and middle age. The average number of existing natural teeth, the rates of 20 or more natural teeth, complaints of chewing discomfort, oral examination, periodontal disease and dental caries, were analyzed using KNHANES VI (2013-2015) as a complex sample. In the age group between 40 and 64, there were 25.2 natural teeth remaining, 91.4% natural teeth retention rate, 23% chewing discomfort rate, 34.7% oral examination rate, 38.7% periodontal disease prevalence, 6.46 the number of caries experience teeth, 21.4% interdental brush usage rate.

장애인 치과환자의 치면세균막 관리

조현재(Hyun-Jae Cho) 대한치과의사협회 2018 대한치과의사협회지 Vol.56 No.8

Dental caries and periodontitis are the major concerns of oral disease to human, and its etiologic factor is dental biofilm. The aim of this study is to discuss the clinical application method and the meaning of dental biofilm control in the disabled patients. Generally, ultrasonic scaler are likely to generate excessive stimulus to the disabled patients. Rubber cup application using Ni-Ti engine could remove dental biofilm more comfortably to the disabled patients.

Tricalcium phosphate 배합 불소바니쉬의 재광화 효과

조현재 ( Hyun-jae Cho ),이한철 ( Han-chul Lee ),이재영 ( Jae-young Lee ),진보형 ( Bo-hyoung Jin ) 대한예방치과·구강보건학회 2017 大韓口腔保健學會誌 Vol.41 No.1

Objectives: The aim of this study was to evaluate the degree of remineralization over time after application of fluoride varnish with and without tricalcium phosphate (TCP). Methods: This in vitro study used extracted bovine lateral incisors without dental caries. Artificial lesions were created in the enamel specimens. The amount of mineral loss (△F_before) was measured using quantitative light-induced fluorescence (QLF). Test fluoride varnishes (10 mg) were applied to the enamel surface of the specimen and dried for 4 min. No fluoride varnish was applied to the specimens in the control group. Each group was randomly assigned 12 specimens, and remineralization was allowed to occur to different time points (0.5, 1, 3, 6, 12, and 24 h) in each group. Specimens were washed with distilled water and dried with compressed air for 3 s. △F_after was determined using QLF. Results: When fluoride varnish containing TCP was applied for up to 6 h, the amount of mineral loss significantly increased, and when non-TCP fluoride varnish was applied for up to 12 hours, the amount of mineral loss significantly increased (P<0.05). However, the amount of mineral loss was higher in the control group. The difference between △F_before and △F_after (DDF) increased over time. There was a significant difference between the TCP group and the control group after 6 h. The non-TCP group showed a significant difference after 24 h compared to the control group. After 12 h, significant differences were observed in the TCP group compared to both the non-TCP and control groups. Conclusions: This study showed that the degree of remineralization increased gradually over time after fluoride varnish application compared to the control group. In particular, fluoride varnish containing TCP showed better remineralization capability than varnish without TCP.

차세대 국방의료정보체계 구축 방향에 관한 연구

조현재(Cho Hyun-Jae),이은화(Lee Eun Hwa),박동언(Park Dong Eun),박호선(Park Ho-Sun) 한국IT서비스학회 2010 한국IT서비스학회 학술대회 논문집 Vol.2010 No.9

차세대 DEMIS는 기존 DEMIS에서의 한계를 극복하고 나아가서는 명실상부한 국방의료정보체계를 구축하기 위하여 탄생된 개념이다. 기존 DEMIS 체계가 단순히 병원 진료 중심의 전산화 체계였던 데 반하여, 차세대 DEMIS는 대내∙ 외 체계와의 연동을 통하여 업무 효율을 향상시키고 군병원 의무기록의 통합관리 체계 구축을 통하여 의료의 질 향상 및 의료 서비스 만족도를 향상시킬 목적으로 구축된다. 또한 기존 DEMIS 체계가 구축될 당시의 환경적 특성이었던 개별 병원 단위의 클라이언트-서버 체계는 메가 센터로 통합 관리되고, 계룡대에서는 원격지 백업 체계를 구축하며, 전시 DEMIS 체계를 구축하여 2차 백업과 전시를 대비한 체계를 구축하게 된다. 이를 통하여 군의료기관으로서 전∙ 평시 운영 역량을 강화시키는 데 기여하게 될 것이다.

딥러닝 시멘틱 세그멘테이션과 YOLO를 이용한 주행가능 경로 검출 연구

김선혜(Seon-Hye Kim),강재영(Jaeyoung Kang) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11

혈액 투석환자에서 Darbepoetin-α 사용 후 발생한 Subcorneal Pustular Dermatosis

조현재 ( Hyun-jae Joe ),조재위 ( Jae-we Cho ),김성애 ( Sung-ae Kim ),이규석 ( Kyu-suk Lee ) 대한피부과학회 2016 대한피부과학회지 Vol.54 No.4

Subcorneal pustular dermatosis is a pustular eruption that shows subcorneal pustules containing polymorphonuclear leukocytes and chronic progression. It most commonly affects the trunk, inguinal region, and axilla of middle-aged women, and the pustules are distributed bilaterally. Cultures of the pustules consistently do not reveal bacterial growth. Subcorneal pustular dermatosis rarely happens, and no specific etiology and pathogenesis are known. Thus, we present this case to provide dermatologists with information on its adequate diagnosis and treatment and to inform them of the risk of subcorneal pustular dermatosis in kidney dialysis patients who use darbepoetin-α. (Korean J Dermatol 2016;54(4):284~287)